package com.pat.java.tools;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;

import org.apache.log4j.Logger;

public class HttpUtil {
	private static final Logger logger = Logger.getLogger(HttpUtil.class);
	/**
	 * http post请求
	 * @param url						地址
	 * @param postContent				post内容格式为param1=value&param2=value2&param3=value3
	 * @return
	 * @throws IOException
	 */
	public static String httpPostRequest(URL url, String postContent) throws Exception{
		OutputStream outputstream = null;
		BufferedReader in = null;
		try
		{
			URLConnection httpurlconnection = url.openConnection();
			httpurlconnection.setConnectTimeout(10 * 1000);
			httpurlconnection.setDoOutput(true);
			httpurlconnection.setUseCaches(false);
			OutputStreamWriter out = new OutputStreamWriter(httpurlconnection
					.getOutputStream(), "UTF-8");
			out.write(postContent);
			out.flush();
			
			StringBuffer result = new StringBuffer();
			in = new BufferedReader(new InputStreamReader(httpurlconnection
					.getInputStream(),"UTF-8"));
			String line;
			while ((line = in.readLine()) != null)
			{
				result.append(line);
			}
			return result.toString();
		}
		catch(Exception ex){
			logger.error("post请求异常：" + ex.getMessage());
			throw new Exception("post请求异常：" + ex.getMessage());
		}
		finally
		{
			if (outputstream != null)
			{
				try
				{
					outputstream.close();
				}
				catch (IOException e)
				{
					outputstream = null;
				}
			}
			if (in != null)
			{
				try
				{
					in.close();
				}
				catch (IOException e)
				{
					in = null;
				}
			}
		}	
	}	
	
//	/**
//	 * 通过httpClient进行post提交
//	 * @param url				提交url地址
//	 * @param charset			字符集
//	 * @param keys				参数名
//	 * @param values			参数值
//	 * @return
//	 * @throws Exception
//	 */
//	public static String HttpClientPost(String url , String charset , String[] keys , String[] values) throws Exception{
//		HttpClient client = null;
//		PostMethod post = null;
//		String result = "";
//		int status = 200;
//		try {
//	           client = new HttpClient();                
//               //PostMethod对象用于存放地址
//             //总账户的测试方法
//               post = new PostMethod(url);         
//               //NameValuePair数组对象用于传入参数
//               post.addRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=" + charset);//在头文件中设置转码
//
//               String key = "";
//               String value = "";
//               NameValuePair temp = null;
//               NameValuePair[] params = new NameValuePair[keys.length];
//               for (int i = 0; i < keys.length; i++) {
//            	   key = (String)keys[i];
//            	   value = (String)values[i];
//            	   temp = new NameValuePair(key , value);   
//            	   params[i] = temp;
//            	   temp = null;
//               }
//              post.setRequestBody(params); 
//               //执行的状态
//              status = client.executeMethod(post); 
//              logger.info("status = " + status);
//               
//              if(status == 200){
//            	  result = post.getResponseBodyAsString();
//              }
//               
//		} catch (Exception ex) {
//			// TODO: handle exception
//			throw new Exception("通过httpClient进行post提交异常：" + ex.getMessage() + " status = " + status);
//		}
//		finally{
//			post.releaseConnection(); 
//		}
//		return result;
//	}
//	
//	/**
//	 * 字符串处理,如果输入字符串为null则返回"",否则返回本字符串去前后空格。
//	 * @param inputStr			输入字符串
//	 * @return	string 			输出字符串
//	 */
//    public static String doString(String inputStr){
//    	//如果为null返回""
//        if(inputStr == null || "".equals(inputStr) || "null".equals(inputStr)){
//    		return "";
//    	}	
//        //否则返回本字符串把前后空格去掉
//    	return inputStr.trim();
//    }
//
//    /**
//     * 对象处理，如果输入对象为null返回"",否则则返回本字符对象信息，去掉前后空格
//     * @param object
//     * @return
//     */
//    public static String doString(Object object){
//    	//如果为null返回""
//        if(object == null || "null".equals(object) || "".equals(object)){
//    		return "";
//    	}	
//        //否则返回本字符串把前后空格去掉
//    	return object.toString().trim();
//    }
    
}
